The goddess Ristarte must summon a champion to save her world and chooses a man named Seiya, whose abilities are off the charts but whose overly-cautious personality may give her second thoughts.

Chaos Machina succeeds in driving Seiya and Rista back to the Unified Divine Realm. They must figure out another way to end her dominance over the town before anyone else gets hurt.

Aria suggests that Seiya train under one of the gods in the Divine Realm. Rista and Seiya must find allies when a looming threat befalls Gaeabrande.

Seiya bothers Mash when he waves off Mash's offer of assistance against a looming undead army, but must eventually come to the rescue when Mash disappears.

Seiya insists that Mash and Elulu receive more training before they lead Seiya's party to a cave called the Dragons' Den, which is said to contain a powerful weapon.

Elulu and the others are shocked to learn that she is supposed to trade her life to be made the ultimate weapon for defeating the Dragon Lord. They reluctantly agree to the ceremony, but trouble erupts when they have second thoughts.